Mammography Phantom Studies Using 3D Electrical Impedance Tomography with Numerical Forward Solver

• Published in: 2007 Frontiers in the Convergence of Bioscience and Information Technologies pp. 379 - 383
• Main Authors: Ijaz, U.Z., Bong Seok Kim, Tzu-Jen Kao, Khambampati, A.K., Kim, S., Min Chan Kim, Newell, J.C., Isaacson, D., Kyung Youn Kim
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-10-2007
• Subjects: Breast cancer; Cancer detection; Finite element methods; Geometry; Imaging phantoms; Impedance; Mammography; Shape measurement; Solid modeling; Tomography
• ISBN: 9780769529998; 0769529992
• DOI: 10.1109/FBIT.2007.93

In this study, the 3D mammography geometry is considered to detect breast cancer based on the electrical impedance tomography. The finite element method formulation of the forward 3D electrical impedance tomography model with complete electrode model is considered for the rectangular mammography geometry. For the discretization, Galerkin method is adopted on linear tetrahedral elements. The regularized one-step Gauss-Newton method is employed as the inverse solver. A test phantom designed specifically to resemble the shape of compressed breasts is used with ACT4 measurement system. The numerical simulation and extensive experimental results are shown to illustrate the proposed method.